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@IRstuff m asking about the position of the RTD in this Configuration. not the wiki one. see below link where is the location of the 4 wire RTD? http://files.engineering.com/getfile.aspx?folder=36079af5-9b77-4aa7-ac49-1ed427ab355b&file=4wire.gif

@skottyUk i meant where is the location of the 4 wire RTD in that circuit?

http://files.engineering.com/getfile.aspx?folder=6e382045-6b8c-44d5-812a-5db1e925f483&file=4wire.jpg

hey Scotty , nice link...i read on it.. but in the kelvin Section they have not given about which element is varrying and all , means in case i am connecting a 4 wire RTD in that kelvin section how the circuit will look like? can u please tell me? the ckt is this...

if it is really not possible to connect a 4 wire RTD in any bridge then is there any IC which can take input from upto 4 4-wire RTDs ? with lowest cost ? to which i can feed these 4 RTDs..? ADS1246/47/48 can take upto 3 4-wire RTDs ,but is der any IC which can take 4 4wire RTDs?

no.. i just want to know whether i can connect a 4 wire pt100 in one of the arm of the wheatstone bridge. if yes then how to go about it? if not wheatStone bridge then is it possible with any other bridge? please help

i want a way to connect a 4 wire RTD to a WheatStone Bridge. is it possible to do that or no? and what about the kelvin configuration show in the below image ? i want to take input from 4 4-wire RTD's and then give it to a ADC and then to a MicroController. but all of this i have to do...

hey compositepro , have a look at this diagram. in this diagram 4 wire pt100 is connected in kelvin bridge. can you explain me this circuit?http://upload.wikimedia.org/wikipedia/commons/1/16/4wirebetter.gif

i want to use 4 4-wire RTD's (Pt100) to sense say temperatures in 4 different rooms. which ADS IC will be good for this one? which ADS ICs which is low in cost bt cant take input from these 4 RTDs ?

means the output of this pt100 through sense wires can be directly given to anaogue to digital converter? will it work that way?

i dint get you , can you please draw it in paint and show me?

see thishttp://files.engineering.com/getfile.aspx?folder=88a5d8dd-e9c5-479a-af4d-027da29f5383&file=Fourwire.gif

means i dont need to connect it in one of the arm of the bridge? on wiki one diagram they have given, have a look at it. can you please explain me that? http://upload.wikimedia.org/wikipedia/commons/4/4f/Fourwire.gif

really ? have you tried anytime to connect pt400 in dat configuration? what about the other 2 leads??

i want to connect a 4 wire RTD PT100 in a wheatStone Bridge. i tried searching on internet but only upto 3 wire configurations in bridge are available or circuits using other ADS IC's are available. but i want to do it in a Bridge Configuration. can any one suggest how i can do it?